What are the target cells of GnRH?
What are the target cells of GnRH?
Gonadotropin releasing hormone (GnRH) is secreted from the hypothalamus and stimulates gonadotropic cells in the anterior pituitary gland to release luteinizing hormone and follicle-stimulating hormone, which in turn regulate the gametogenic and steroidogenic functions of the gonads in male and female.
What is ADH target?
| Endocrine gland/ source of hormone | Hormone | Target organ or tissue |
|---|---|---|
| Posterior pituitary (neurohypophysis) | ADH (antidiuretic hormone) | Kidney tubules Smooth muscle in arterioles |
| Oxytocin | Uterine smooth muscle Mammary gland | |
| Pineal gland | Melatonin | Various tissues |
| Thyroid | Thyroxine (T4) Triiodothyronine (T3) | Most tissues |
What cells do GnRH act on?
Abstract. Gonadotropin releasing hormone (GnRH) is secreted from the hypothalamus and stimulates gonadotropic cells in the anterior pituitary gland to release luteinizing hormone and follicle-stimulating hormone, which in turn regulate the gametogenic and steroidogenic functions of the gonads in male and female.
What is the function of GnRH?
A hormone made by a part of the brain called the hypothalamus. GnRH causes the pituitary gland in the brain to make and secrete the hormones luteinizing hormone (LH) and follicle-stimulating hormone (FSH). In men, these hormones cause the testicles to make testosterone.
Where does gonadotrophin-releasing hormone ( GnRH ) come from?
Gonadotrophin-releasing hormone (GnRH) is produced from cells in the hypothalamus. It is then released into small blood vessels that carry the hormone to the pituitary gland. As a consequence, the pituitary gland produces luteinizing hormone (LH) and follicle-stimulating (FSH) hormones.
How does parathyroid hormone work in the kidneys?
In the kidneys the hormone stops the release of calcium through the urine, while also increasing vitamin D production. Because the function of parathyroid hormone directly impacts blood calcium levels, improper balance of parathyroid hormone can cause an imbalance of calcium levels in the blood.
How are GnRH, LH and FSH levels controlled?
As puberty begins, GnRH levels start to rise. When the testes and ovaries are fully developed, GnRH, LH, and FSH production are controlled by the levels of testosterone and female sex hormones (estrogen and progesterone). In women, FSH encourages eggs to grow in the ovaries.
How does parathyroid hormone help prevent low calcium levels?
Parathyroid hormone helps prevent low calcium levels by acting on the bones, intestine, and kidneys. In the bones, the hormone triggers the release of calcium stores from the bones to the blood. This can lead to bone destruction. In the intestines, parathyroid hormone helps with vitamin D metabolism.